SQ Setup Questions

[mlstrass 5,000+ posts]

All he can do is plot the average delay and try to make up for it with T/Afunctions on the HU or some other processor, it's not going to win any

championships, but it should sound good to most people.

Nice to see someone who realizes that the word SQ does not automatically mean a comp car. He should be able to make it sound very good for a daily set up.

Personally I've had good luck with ported boxes tuned on the high side to avoid an exaggerated bottom end. Will I win an SQ comp, no, but that's not my intention. What I do have has it tight/accurate sounding bass that blends nicely with my front stage which is probably what most people want when mentioning SQ.

 

[audioholic 5,000+ posts]

All he can do is plot the average delay and try to make up for it with T/Afunctions on the HU or some other processor, it's not going to win any

championships, but it should sound good to most people.

T/A wont affect group delay at all.
I agree he could make vented system sound really good to most people. But if he's here asking for a "SQ" setup, why suggest a "SQL" setup in the form of a ported enclosure? Its almost like some of you guys refuse to admit sealed systems have their place too (not meaning you specifically here mcsoul).

 

[mcsoul 10+ year member]

T/A wont affect group delay at all.
I agree he could make vented system sound really good to most people. But if he's here asking for a "SQ" setup, why suggest a "SQL" setup in the form of a ported enclosure? Its almost like some of you guys refuse to admit sealed systems have their place too (not meaning you specifically here mcsoul).

OK here is where I need some help and education.

 

[JimJ 5,000+ posts]

There's that "daily" word again //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[mlstrass 5,000+ posts]

How do T/S parameters of the actual sub play into the group delay equation?

 

[mlstrass 5,000+ posts]

There's that "daily" word again //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

Is that not what we're discussing?

 

[audioholic 5,000+ posts]

OK here is where I need some help and education.

Group delay is the delay between the sound wave emanating from the front of the speaker cone versus the sound wave emanating from the rear of the cone, which then passes thru the port to reinforce the direct radiating wave. This is exactly how a ported enclosure boosts output. It is also why the boost is dependent on the frequency of the signal and tuning (length and diameter) of the port itself.
There will always be a delay between the front and rear waves in a vented system (group delay). T/A merely delays the signal being fed to the sub in relation to the signal being sent to the other speakers. Once the signal reaches the speaker/enclosure, THAT is when the group delay occurs. Thus, T/A cannot affect GD.

Hope that helps.

 

[mcsoul 10+ year member]

Group delay is the delay between the sound wave emanating from the front of the speaker cone versus the sound wave emanating from the rear of the cone, which then passes thru the port to reinforce the direct radiating wave. This is exactly how a ported enclosure boosts output. It is also why the boost is dependent on the frequency of the signal and tuning (length and diameter) of the port itself.
There will always be a delay between the front and rear waves in a vented system (group delay). T/A merely delays the signal being fed to the sub in relation to the signal being sent to the other speakers. Once the signal reaches the speaker/enclosure, THAT is when the group delay occurs. Thus, T/A cannot affect GD.

Hope that helps.

It definitely did, thank you.

 

[James Bang 5,000+ posts]

my setup does not have super loud bass, so i'll call it SQ.

 

[mlstrass 5,000+ posts]

Group delay is the delay between the sound wave emanating from the front of the speaker cone versus the sound wave emanating from the rear of the cone, which then passes thru the port to reinforce the direct radiating wave. This is exactly how a ported enclosure boosts output. It is also why the boost is dependent on the frequency of the signal and tuning (length and diameter) of the port itself.
There will always be a delay between the front and rear waves in a vented system (group delay). T/A merely delays the signal being fed to the sub in relation to the signal being sent to the other speakers. Once the signal reaches the speaker/enclosure, THAT is when the group delay occurs. Thus, T/A cannot affect GD.

Hope that helps.

Good explanation, thanks //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[mlstrass 5,000+ posts]

my setup does not have super loud bass, so i'll call it SQ.

And "assuming" you don't compete I'll call it daily //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[DEdwards 10+ year member]

[No message]

 

[James Bang 5,000+ posts]

i compete.. but i don't win...

 

[JayRich 10+ year member]

Wow....

Exactly what I was thinking

 

[JayRich 10+ year member]

i compete.. but i don't win...

But he does lol